| abstract |
The invention relates to processes for the preparation of low-viscosity, water-soluble polymer dispersions on an aqueous basis with high active substance concentrations comprising a polymer A), composed of water-soluble monomers a1) and, if appropriate, amphiphilic monomers a2), and a polymeric dispersant D). A process variant consists in that water is drawn off during the preparation of the polymer A) in the presence of the polymeric dispersant D), which leads to the polymer dispersion PD '). Another process variant comprises the addition of the polymeric dispersant D) in aqueous solution to the polymer dispersion PD ') in a second process step, which leads to the polymer dispersion PD' '). |